Sekotlong has been struggling for game-time and will now have an opportunity to prove himself at Lidoda Duvha, who have the league's top scorer Mwape Musonda in their team.
The former University of Pretoria and Free State Stars forward has not featured in any of the competitions for Downs this season.
His chances of playing regularly at Sundowns in the second half of the season were slim, especially when coach Pitso Mosimane can move right-back Thapelo Morena upfront like he did in their 2-1 victory over Highlands Park last week.
Leopards will be happy to have someone who can help Musonda upfront to get the goals.